Date: Thu, 12 Aug 2021 01:12:13 +0300 From: Vladimir Kondratyev <wulf@FreeBSD.org> To: Mark Kane <mark@kane.mn> Cc: usb@freebsd.org, hps@selasky.org Subject: Re: eGalax USB touchscreen issues Message-ID: <12706f32-be2e-1cda-5d90-53b4e80b0b52@FreeBSD.org> In-Reply-To: <a7e09a33593bc00c7ef525b47efcafa1@kane.mn> References: <324d49ca-1c0e-659d-194d-ece4d5f7f5e2@FreeBSD.org> <0ae3fec48e2c351d2c006f4ba4932cd7@kane.mn> <166dd4d4-24cd-c24b-d75e-9a34fa734358@FreeBSD.org> <eccaff2a99153fb44ffa8df3c93d7eb6@kane.mn> <36983ce5-8358-5a04-2377-46067d3c3c79@FreeBSD.org> <c9e68dbb-5382-976d-7302-d816d8636153@FreeBSD.org> <59ba07a0ecbdac36746fe18ea5f0559f@kane.mn> <92c855bf-a73a-bae5-fcdc-c5a88008739b@FreeBSD.org> <5e8cd8d75deff98e8db3352001ce8432@kane.mn> <858ac67e-14e2-730c-4a16-ca218e2c0bee@FreeBSD.org> <ee3c43f89df5dffd0b0dab7393f0c5b5@kane.mn> <168b368c-3258-6416-42c5-a722e45bf14b@FreeBSD.org> <a7e09a33593bc00c7ef525b47efcafa1@kane.mn>
index | next in thread | previous in thread | raw e-mail
On 10.08.2021 07:03, Mark Kane wrote:
> On 2021-08-07 05:56, Vladimir Kondratyev wrote:
>> Try attached patch (on top of previous one)
>
> The screen we've been testing works perfectly with this patch on top of
> previous one (with usbhid_load="YES" and hw.usb.usbhid.enable=1). Thanks
> very much for all of your work on this! :)
Great! You wrote very descriptive crash report which made tracking the
bug rather easy task!
>
> I have many of these egalax screens for an application being migrated
> from Linux to FreeBSD. Physically they all look identical but after
> trying a few others it seems that some are very different inside. Below
> is one that is not working with or without the patches. Is there any
> possibility of also supporting this variant on FreeBSD?
>
> Screen #2 - With your 2 patches and usbhid/hidraw:
>
> ugen0.3: <eGalax Inc. USB TouchController> at usbus0
> usbhid0 on uhub1
> usbhid0: <eGalax Inc. USB TouchController, class 0/0, rev 1.10/1.00,
> addr 3> on usbus0
> hidbus0: <HID bus> on usbhid0
> hidraw0: <eGalax Inc. USB TouchController Raw HID Device> on hidbus0
> hidraw0: no report descriptor
>
> # hid-decode /dev/hidraw0
> (no output)
> # usbhid-dump
> 000:003:000:DESCRIPTOR 1628551474.564813
> 8D 0F 00 09 42 09 32 15 00 25 01 95 02 75 01 81
> 02 95 06 75 01 81 03 05 01 09 30 75 10 95 01 A4
> 55 00 65 00 36 00 00 46 00 00 16 1E 00 26 C8 0F
> 81 02 09 31 16 3C 00 26
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This one looks like corrupted fragment of touch device HID report
descriptor. Check wires, USB port, device itself and so on. Most
probably, it is a standard eGalax HID device with some USB transport
problems.
> 000:004:001:DESCRIPTOR 1628551474.567569
> 05 0C 09 01 A1 01 85 01 19 00 2A 3C 02 15 00 26
> 3C 02 95 01 75 10 81 00 C0 05 01 09 80 A1 01 85
> 02 19 81 29 83 25 01 75 01 95 03 81 02 95 05 81
> 01 C0
>
> 000:004:000:DESCRIPTOR 1628551474.570559
> 05 01 09 06 A1 01 05 07 19 E0 29 E7 15 00 25 01
> 95 08 75 01 81 02 95 08 75 01 81 01 05 08 19 01
> 29 03 95 03 75 01 91 02 95 01 75 05 91 01 05 07
> 19 00 2A FF 00 15 00 26 FF 00 95 06 75 08 81 00
> C0
> #
>
> Based on that and a lot of forums/bugzilla reading it seems that the
> vendor re-used hardware IDs that makes older non-HID touchscreens look
> the same as their newer HID screens. This "screen #2" was manufactured
> in 2012 compared to the 2018 unit that works with your patches now. So I
> suspect this may be one of the older non-HID screens that uep(4) should
> support (?).
I don't think so. I have a sample of non-HID eGalax touchscreen built in
2009. It advertises bInterfaceClass = 0x00ff rather than 0x0003 (HID) in
your touchscreen.
> With usbhid disabled uep(4) attaches in evdev mode and X gets the input
> device but no events are heard:
>
> Trying uep(4) in native mode with xf86-input-egalax also had the same,
> uep(4) attached but no events when testing with xinput.
>
xf86-input-egalax can not work with kernels compiled with EVDEV_SUPPORT.
This options disables native interface of uep(4)
> # usbconfig -d ugen0.3 dump_all_desc
> ugen0.3: <eGalax Inc. USB TouchController> at usbus0, cfg=0 md=HOST
> spd=FULL (12Mbps) pwr=ON (100mA)
>
> bLength = 0x0012
> bDescriptorType = 0x0001
> bcdUSB = 0x0110
> bDeviceClass = 0x0000 <Probed by interface class>
> bDeviceSubClass = 0x0000
> bDeviceProtocol = 0x0000
> bMaxPacketSize0 = 0x0040
> idVendor = 0x0eef
> idProduct = 0x0001
> bcdDevice = 0x0100
> iManufacturer = 0x0001 <eGalax Inc.>
> iProduct = 0x0002 <USB TouchController>
> iSerialNumber = 0x0000 <no string>
> bNumConfigurations = 0x0001
>
> Configuration index 0
>
> bLength = 0x0009
> bDescriptorType = 0x0002
> wTotalLength = 0x0022
> bNumInterfaces = 0x0001
> bConfigurationValue = 0x0001
> iConfiguration = 0x0001 <eGalax Inc.>
> bmAttributes = 0x00a0
> bMaxPower = 0x0032
>
> Interface 0
> bLength = 0x0009
> bDescriptorType = 0x0004
> bInterfaceNumber = 0x0000
> bAlternateSetting = 0x0000
> bNumEndpoints = 0x0001
> bInterfaceClass = 0x0003 <HID device>
^------HID
> bInterfaceSubClass = 0x0000
> bInterfaceProtocol = 0x0000
> iInterface = 0x0000 <no string>
>
> Additional Descriptor
>
> bLength = 0x09
> bDescriptorType = 0x21
> bDescriptorSubType = 0x10
> RAW dump:
> 0x00 | 0x09, 0x21, 0x10, 0x02, 0x00, 0x01, 0x22, 0x8d,
> 0x08 | 0x00
>
> Endpoint 0
> bLength = 0x0007
> bDescriptorType = 0x0005
> bEndpointAddress = 0x0081 <IN>
> bmAttributes = 0x0003 <INTERRUPT>
> wMaxPacketSize = 0x0008
> bInterval = 0x0003
> bRefresh = 0x0000
> bSynchAddress = 0x0000
> #
--
WBR
Vladimir Kondratyev
help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?12706f32-be2e-1cda-5d90-53b4e80b0b52>